Street Fighter V PC does not currently support d-input arcade sticks, which is pretty much every PS3 / 4 stick out there. Capcom has said they would like to patch this in at a later date. Try using a program called X360CE. It emulates an x-input controller, which will make your stick work on SFV. There are instructions on how to set it up and where to place the files for SFV else where on the forum.